Method of using bio-fermented fodder to breed loach fry

Abstract

The invention relates to a method of using bio-fermented fodder to breed loach fry, which belongs to the technical field of loach fry pond breeding and includes: using the biological anaerobic fermentation technique to put materials into a cement pool to make bio-fermented fodder by means of sealed anaerobic fermentation, and adding the fodder into water to convert harmful gases and harmful substances in the water into substances for growth and propagation of floating animals and plants, so that dissolved oxygen in the water is sufficient, PH value is stable and a fine survival and growth environment is created for loach fry, wherein the fodder is rich in nutrition and fine in palatability and can generate various organic acids, bio-enzymes and vitamins, the loach fry are insusceptible to invasion of diseases and insect pests during feeding, and survival rate of the loach fry raised in the pond is increased to 50%-60%. Therefore, the problems that the survival rate of the loach fry raised manually and currently is only between 1% and 10%, breeding cost is high and developed commercial loaches are poor in quality are solved.

Description

technical field [0001] The invention relates to a method for cultivating loach seedlings with biologically fermented feed, belonging to the technical field of loach seedling breeding in ponds. Background technique [0002] The artificial breeding of loach is generally divided into three stages, namely the hatching stage, the feeding stage of loach seedlings with a body length of 3-4 mm to 3-4 cm, and the feeding stage of loach seedlings to commercial loach. Among the three stages, the stage of raising seedlings is the most critical and the breeding difficulty is the greatest. The conventional breeding method in the seedling breeding stage is to apply organic fertilizer or inorganic fertilizer into the water body, supplemented by the method of sprinkling soybean milk; the organic fertilizer is generally based on human and animal urine and feces, and the inorganic fertilizer is generally based on urea, ammonium nitrate, etc. The amount of feed that loach seedlings can eat in ...

AI Technical Summary

Problems solved by technology

The conventional breeding method in the seedling breeding stage is to apply organic fertilizer or inorganic fertilizer into the water body, supplemented by the method of sprinkling soybean milk; the organic fertilizer is generally based on human and animal urine and feces, and the inorganic fertilizer is generally based on urea, ammonium nitrate, etc. The amount of feed that loach seedlings can eat in this feeding method is very limited, and the above-mentioned remaining substances are all decomposed in the water body, which requires a large amount of oxygen in the water body to decompose and convert these substances, which will make harmful gases in the water body such as ammonia nitrogen , hydrogen sulfide, nitrite, etc. are high, and the dissolved oxygen in the water is low, which leads to the loach seedlings not adapting to the water environment, and there will be a large number of deaths without feeding, floating heads, etc.

On the other hand, conventional fermentation and decomposing of organic fertilizers will cause great environmental pollution to the water body. When the loach seedlings grow to 2-3 cm, severe hemorrhage will occur. In addition, there is no suitable biological opening feed in the pond, and the loach seedlings will bite each other. Tail, also lead to low survival rate of loach seedlings

Due to the above-mentioned reasons, the current domestic survival rate of loach seedlings with a body length of 3-4 mm to 3-4 cm in the feeding stage is only about 1% to 10%.